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My HTC One slipped into a bucket of water and after I removed it, it was still working. After about a half an hour it shut off and now it won’t start back up or charge. Please help me out.

Kamran, the very first thing you want to do, is to remove the battery and no longer try to turn your phone, to charge or to sync it. Disassemble your phone, use the teardown for help with that./ Once you have it totally disassembled, clean all the parts with a high grade isopropyl alcohol. Check this guide for a proper procedure. Even so it was written for an iPhone, it should still be of some help to you. While you clean your phone properly, check for any missing, burned or otherwise damaged component. Check all your flex cables, clean the connectors as well. Once that is done, replace the battery and reassemble your phone. Then re-evaluate for any further damage. Remember that Rice is not going to clean your phone or prevent corrosion. Hope this helps, good luck.

Anyone suggesting rice, just so you know rice does not do much at all. It will not save your water damaged phone. You should follow the instructions oldturkey03 posted here if you want to actually get it repaired correctly. If anything, the rice will just leave starch behind with the rest of the minerals left from the water that will start to corrode the metal pieces in your phone. Just more of a mess to clean up so forget the rice. Get it torn apart and remove the battery and clean the phones parts with the Isopropyl Alcohol. Otherwise corrosion will slowly cause the components in your phone to fail. I have repaired a water damaged HTC One m8 that the person tried putting in rice for a week. When I disassembled the phone there was a descent amount of corrosion around the battery, the back side of the LCD, the LCD’s ribbon cable, and vibrator motor just to name a few. which I cleaned with 99% Isopropyl alcohol. The battery was ruined and would not hold a charge of more than 2.8 volts which is not even close to the required voltage to even power on the phone. The LCD was ruin by the corrosion as well. I could tell she let this phone sit for a while(she said a few months) before bringing it in to be repaired. She also had an iPhone 6, so she wasn’t worried about the htc getting repaired right away. A good cleaning with the Isopropyl Alcohol and a new battery and LCD/Digitizer got her htc one m8 up and running again and so far has not had any issues since the repair(about 3 months ago). So if you have water damage its best to cook the rice for dinner after you clean your phone with Isopropyl alcohol.

My htc phone fell on a bucket of water and then it didn’t turn on. I waited 3 years but it still don’t work

I dropped my htc desire 530 in the bath trying to change songs… never turned it off, kept playing my music fine… going to wait until morning before i attempt charging it though as i love my phone… i researched my phones water compacity and its fairly good for the phone it is… hasnt glitched or shut off on me yet, its been 3hrs and it is still working like nothing happened… totally would recomend this cheap phone to anyone….